Microservices Interview Questions and Answers
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Ques 1. How can microservices handle cross-cutting concerns like distributed tracing and logging?
Microservices can leverage distributed tracing tools like Jaeger or Zipkin to trace requests across multiple services. Centralized logging solutions help aggregate logs for monitoring and debugging.
Example:
Implementing distributed tracing to trace a user request as it flows through multiple microservices.
Ques 2. What are microservices?
Microservices is an architectural style that structures an application as a collection of small, independent services, each with its own database and communicating over well-defined APIs.
Example:
An example could be breaking a monolithic e-commerce application into services such as user management, product catalog, and order processing.
Ques 3. Explain the advantages of microservices architecture.
Advantages include scalability, independent deployment, technology flexibility, fault isolation, and ease of maintenance.
Example:
Scalability is achieved by independently scaling services based on demand.
Ques 4. What is service discovery in microservices?
Service discovery is the mechanism by which microservices locate and communicate with each other.
Example:
Tools like Eureka or Consul help in dynamic service discovery within a microservices environment.
Ques 5. How does microservices communication happen?
Microservices communicate through APIs, often using protocols like HTTP/REST or message queues like RabbitMQ.
Example:
A user service sending a request to an order service to place an order.
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